Hi Guys!
This is Andy from the Popvertising.com ad network. We launched only recently, so we do not have as much traffic as the big players yet. Maybe the one or other might want to give us a try anyway. Here are some more details:
Finances:
- $10 minimum deposit
- Paypal, Paxum, Wire
- Minimum bid is $0.50/CPM
Targeting Options:
- Category
- Browser
- Device
- Country
- Geo
- Blacklist/Whitelist
Traffic Volume:
https://www.popvertising.com/up/showstats
If you want to give it a go, just send me a pm with your email address and I'll add a $5 test budget to your account. Also please let me know if you have comments or questions. 
Do you have Desktop or mobile?
How many direct publishers do you have? What's the top10 geos in volumes by desktop & mobile?
Can you tell us the tracking variable in order to configure this traffice source in our trackers?
Sure, it's: _i_
Yes, _i_ is the source identifier. We do not offer any other variables at the moment.
When you say min bid is 0.50, i pressume thats CPM and not per pop? 
Regarding geos, can you give us at least some idea of the main geos? Is there good amounts of US/EURO's in there or is it mainly china/asia traffic etc.
Yes, that is CPM 
We have mostly european and asian traffic at the moment.
We have added an inventory/volume list on our site: https://www.popvertising.com/up/showstats
Some updates:
We now have between 400-600,000 hits available per day. Most ad campaigns are targeting adult, so general traffic is pretty cheap at the moment.
We also added a couple more tracking tokens:
-catid-, -catname-, -ispn-, -ispid-, -country-, -bid-, -device-, -browser-, -source-
Looking forward to do small budget test of the traffic, hope there is some inventory for mobile traffic.
are there any carrier targetting